Solenoid-actuated Poppet Valve Compared with the spool valve directional valve, the ball directional valve has the following advantages: ①no hydraulic clamping phenomenon, high action reliability; ② good sealing; ③ insensitive to oil pollution; ④ short switching time ; ⑤ The medium viscosity range is large, the medium can be water, emulsion and mineral oil; ⑥ working pressure can be as high as 63MPa; ⑦ ball valve core can be obtained directly from the bearing factory, the precision is very high, the price is cheap. Figure 5.24 is a normally open two-position three-way electromagnetic ball directional valve. It is mainly composed of left and right valve seats 4 and 6, ball valve 5, spring 7, joystick 2 and lever 3. The picture shows the power off state of the electromagnet, which is the normal position. The pressure oil in port P acts on the right side of the ball valve 5 on the one hand, and enters the cavity of the lever 2 through the channel 6 on the other hand and acts on the left side of the ball valve 5 to ensure that the hydraulic pressure on both sides of the ball valve 5 is balanced. The ball valve 5 is pressed against the left valve seat 4 under the action of the spring 7, P and A are connected, and A and T are cut off. When the electromagnet 8 is energized, the armature pushes the lever 3 and pushes the joystick 2 with 1 as a fulcrum, overcoming the spring force, so that the ball valve 5 is pressed against the right valve seat 6 to realize the reversal, P and A are cut off, and A and T are connected. Electromagnetic ball directional valve is mainly used in the occasions that require good sealing. Figure 5.24 Two-position three-way solenoid ball directional valve Product categories of Cloth Pen Nib, it is belong to Passive Stylus Pen. Passive stylus pen is characterized by being cheap and without charging. But compared with the active capacitive stylus pen, its tip diameter is larger, so it cannot be used in works with high precision. Using high-quality conductive cloth head, smooth contact with the screen. Cloth Pen Nib,Multi-Functional Pen Stylus Pen,Stylus Pencil With Clip,Touch Stylus Pencil Shenzhen Ruidian Technology CO., Ltd , https://www.szwisonen.com